Global Patent Index - EP 1655152 A1

EP 1655152 A1 20060510 - Apparatus for sensing tire information, reducing distortion of amplitude-modulated wave

Title (en)

Apparatus for sensing tire information, reducing distortion of amplitude-modulated wave

Title (de)

Vorrichtung zur Sensierung von Reifendaten mittels Massnahme zur Unterdrückung von Verzerrung von amplitudemodulierten Wellen

Title (fr)

Appareil pour capter des informations en provenance d'un pneumatique avec des moyens de reduction de distorsion d'ondes modulées en amplitude

Publication

EP 1655152 A1 20060510 (EN)

Application

EP 05023545 A 20051027

Priority

JP 2004325466 A 20041109

Abstract (en)

An apparatus for sensing tire information including information about tire pressure includes an interrogator for transmitting an interrogation signal to a vicinity of a tire of a vehicle in a transmission period and for receiving and processing a response signal including the tire information in a reception period and a transponder attached to the tire. The transponder includes a sensor for sensing the tire information and a second mixing unit for mixing first and second signals and outputting a difference signal having a frequency equal to a difference in frequency between the first and second signals. The interrogator includes a power combining circuit for combining the first and second signals. The first signal is different from the second signal by a predetermined frequency that can excite the sensor. In the transmission period, a combined signal of the first and second signals is transmitted from an antenna of the interrogator.

IPC 8 full level

B60C 23/04 (2006.01)

CPC (source: EP US)

B60C 23/0433 (2013.01 - EP US)

Citation (search report)

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 1655152 A1 20060510; JP 2006131195 A 20060525; US 2006109100 A1 20060525

DOCDB simple family (application)

EP 05023545 A 20051027; JP 2004325466 A 20041109; US 28263405 A 20051103